Aldejf siblet



ALDENv SIBLEY, OF PAW'IUCKET, RHODE ISLAND.

Leners Patent No. 79,605, daad .my 7, 186s.

IMPROVEMENT IN GBARING.

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TO ALL PERSONS TO WHOM THESE PRESENTS MAY COME:

Be it known that- I, ALBEN SIBLY, of Pawtucket,.in' the county of Providence, and State of Rhode Island,` d have invented a new and useful Improvement in Gearing; and do hereby declare' the same to be fully described in the following specification, and represented in the accompanying drawings, of which'-` Figure 1 denotes a front elevation',

Figure 2 a top view, and

Figure 3 a transverse section of a'gear and its pinion as provided with my invention.

'.Ihese gears are designed for use in a calico-printing machine, provided with a series of printing-cylinders, eachof which is to have placed on its axle or shaft'onc of the pinions, or a screw-sleeve, to receive the shaft. The gear to'operate with the pinion is the main gear for operating the series.

In the drawings, A denotes such main gear, and B one of the pnions of the series, supposed to be applied to the several printing-cylinders. l d

The pinion is arranged on a short tubular shaft, C, which, in turn, encompasses a sleeve or tube, D, the two being connected by a spline or feather-connection, lconsisting ofa groove, a, made on the sleeve, and a- 4 stud, b, projecting from the shaft vC into such groove.

The inion ah'uts aeainst a shoulder c, made on the shaft, and isheld to the shaft vb an annulus, d, screwed p c y on the shaft and into a corresponding recess made within one sideof the pinion, the saine being as shown in the drawings. g

A worm-gear, e, flxedon the shaft G, engages with an endless screw or worm, f, whose shaft,1 g, is supported in bearings 7th, projecting from one side of the pinion. Such shaft has small holes, z' z', made diametrically through it, such being to receive a pin or lever, to enable a,` person to revolve the shaft and its worin, so as to turn the pinion on the shaft C, as occasion may require. g

The shaft C is to freely slide endwise on the sleeve D, and is rendered capable of being so moved or adjusted and xed in place by two annular nuts, k Z, arranged at opposite extremes 5f th'eshafh'and screwedu on screws m n, formed on and around the sleeve. l

The purpose of the adjusting-screws and *nutslast described is to rnove or .adjustthe pinion laterally with respect to the gear. Each tooth of the pinion and gear I form `tapering lengthwise, in manner as represented, the same being to enable ine, as the teeth may wear, to prevent what is termed baclilaslnH the same being accomplished by moving the pinion. toward the gear until the teeth of one may litv closely into the spaces between lthe teeth of the other, while the gear and pinion may be in revolution.

-It is very important that no b acklas should 'take jplace, for 'in ease it docs the figures of the cylinder of the pinion will'not print the cloth in their proper places withv reference to other figures printed on it by'other cylinders of the machine. d

The adjustment of the pinion by an endless screw and the worin-gear, as hereinbefore explained, is for the purpose of bringing a figure of the printing-cylinder of the pinio into its proper position, with reference to any one or more ofthose of the other cylinders ofthe machine.

The sleeve D has a groove, o, made transversely across its. iIOfnt Aend, such seing to receive a key to go through the shaft of a cylinder, and hold the sleeve on such shaft; but instead of employing the sleeve (which admits ofthe pinion being applied to the shaft of any cylinder, provided such shaft will it into the sleeve,) the shaft C inay be arranged directly on the shaft of a; cylinder, and such shaft has a screw or screws cut on it to receive the adjusting-screw nuts or annali-k Z, the shaft C being, in such case, connected with the cylinder-shaft by a spline or feather-connection."

What I claim as my invention, in the above-described mechanism, is as follows:

I claim the pinion and its gear A, as made with tapering teeth, as described, in `combination with the pinion and its cylinder-shaft, and means by which the pinion may be moved and adjusted lengthwise of the said shaft, and with respect to thefellow-gearA, as and for the purpose of preventing backlash, as specified.

I also claim thealrran B and its shaft.

I also claim the combination of the sleeve D with the nuts ,7c l thereof, for moving said pin I also claim the combination n screws m n, and nuts lc l, amilthe w gement and 'combination of the endless screw f anti the worm-gear e with the pinion pinion IB, and the adjusting-screw or screws mn and ion longitudinally of the sleeve, as sei: forth.

nd arrangement of the pinion B, the shaft C, the sleeve D, the adjustingcrm f and its gentle, the whole being substantially `as described.'

' ALDEN S'IBLE'Y. Witnesses:

R. H, EDDY, oF.' P. HALE, Jr. 

